In New York City, 1897, life has never been more thrilling-or dangerous Finley Jayne and her "straynge band of mysfits" have journeyed from London to America to rescue their friend Jasper from the clutches of a devious criminal demanding a trade-the dangerous device Jasper stole from him... for the life of the girl Jasper loves.

One false move from Jasper, and the strange clockwork collar around Mei's neck tightens and tightens. From the rough streets of lower Manhattan to elegant Fifth Avenue, the motley crew of teens follows Jasper's elusive trail. And they're about to discover how far they'll go for friendship.

More than ever, Finley must rely on powerful English duke Griffin King to balance her dark magic with her good side. Yet Griffin is at war with himself over his secret attraction to Finley... and will risk his life and reputation to save her.

Now, to help those she's come to care for so deeply, Finley must infiltrate the criminal gang. Only problem is, she might like the dark side a little too much...